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Sintech titles no longer denienced!8 years after the initial denience ( June 1998 ), the 3 Ultrasoft titles that [URL="http://www.worldofspectrum.org/infoseekpub.cgi?regexp=Sintech"]Si…
Hi Baze
Thanks for the download! And while I'm at it, thanks for the 256 byte "Tube" intro prog, very impressive! :o
from Guy -
In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…
... 'd just reserve one N-byte long, 256-byte aligned "page", fill it ... /> ld h,PAGE/256
ld l,a ; A = byte
ld ... would just scan the N-byte array, skipping 0s or FFs ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... sorted lie in the same 256-byte page. Are you not? (Better ... -
Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…
... to be aligned on a 256 byte page boundary (so instead of ... -
Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... to the screen or a 256-byte sound buffer, and stopping periodically ... -
Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…
Anyone care to write a version that doesn't require a table aligned to 256 byte boundaries (and has the table directly following the code)? Thought I'd ask in case someone does so that I can avoid a little work :-) -
Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…
... require a table aligned to 256 byte boundaries (and has the table ... -
Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…
... br /> FAST: LD H,TABLE/256 ; 2 / 7
... table, aligned to a 256 byte boundary, and followed by ...
HIBRI2: LD H,SMALLTAB/256 ; 2 / 7
RLCA ... table, aligned to a 256 byte boundary, and this table ... -
Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…
...
FAST: LD H,TABLE/256 ; 2 / 7
ADD A ... bytes table, aligned to a 256 byte boundary, and followed by another ... 64 bytes later, at TABLE+256.
The first table ... -
Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
... the cost of a whopping 256-byte decompressor routine. -
He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…
... . The hardware supplies the low byte (depends what you have plugged ... />
In practice the low byte could be anything so programmers ... sure that the high byte and the low byte of the addess ... then filled the entire 256-byte block with that byte to make sure ... -
Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?
Starting on machine code - BASIC first?Howdy. If I wanted to start learning machine code for the speccy, from scratch, would you recommend I learn BASIC first or is it entirely possible to…
... address is aligned on a 256 byte boundary). Spectrum display file addresses ...another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... " layout of screen memory, eg 256 bytes represent a column - hence ... cell" (fits into the same 256-byte column, as gfx data only ...About Microdrives.I have my three microdrives sitting pretty on m new shelves above my monitor. I have never noticed it before but the tape heads look like stereo one…
... they could synchronize data transfer (256 byte chunks) with the Z80's ...Source of Z80 ProcessorsHi all, After seeing the somewhat inflated prices that +2A's and +3's seem to be going for on eBay I'm wondering if trying to fix my 48k+ is a bette…
... crap on the specs page, 256 byte RAM ... they've made a ...Source of Z80 ProcessorsHi all, After seeing the somewhat inflated prices that +2A's and +3's seem to be going for on eBay I'm wondering if trying to fix my 48k+ is a bette…
... crap on the specs page, 256 byte RAM ... they've made a ...Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... a constant, aligned at a 256-byte boundary and C L or ... suggestion can be optimised. The 256-byte boundary can be a bit ...Head over Heels on the C64Dunno if this' a good place to bring this up :D I've been comparing Head over Heels versions and the C64 version is way inferior, everytime there's…
... only speeded up using a 256 Byte LookUp table. I know it ...Head over Heels on the C64Dunno if this' a good place to bring this up :D I've been comparing Head over Heels versions and the C64 version is way inferior, everytime there's…
... only speeded up using a 256 Byte LookUp table. I know it ...Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …
... . The jump table (in the 256 byte block starting at 0x3E00) is ...Filmation... how does it work?Does anyone know exactly how Ultimate's Filamtion works? There's an explantion of the room layout and graphics at [url]http://retrospec.sgn.net/users…
... the speccy I used a 256 byte
buffer) in order from ...VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
...
; PTR2 points to 256 byte table of worm segment positions ... SPRITE data
LDA #SPRITES%256
STA PTR1
... to destination
LDA #7384%256
STA PTR2
... WORMPOS data
LDA #WORMPOS%256
STA PTR2
...I just learnt that Spectrum has 1kB of unused ROMWell, man learns through all his life. I have just discovered that Spectrum has over 1 kilobyte of unused ROM memory, from address 14446 to 15615. Al…
... for an execution trap (a 256 byte area) for the Spectranet indirect ... (with a very small 8 byte entry point area right at ...Skool Daze disassemblyWhile developing [url="http://pyskool.wordpress.com/"]Pyskool[/url], I've also been putting together a disassembly of Skool Daze and Back to Skool, m…
... "slots" (the design allowed for 256); in Back to Skool, the ... flipped in memory (using a 256-byte "mirror" lookup table) to obtain ... bits as nibbles: two per byte. The INK always defaulted to ... text strings at 32-byte or 16-byte intervals, and used arithmetic ...So you want to make a cardgame......but you haven't got a good deck to display. Well here is a fully relocatable routine that will do the job for you. Place the code anywhere in me…
... />
LD H,'PRT_RND ;256-byte table
CURND LD A, ...how to reflect a byte's bit-pattern in assembly?I'm trying to use 16 pixel-wide graphics which are symmetrical around the vertical, i.e. if the left byte is 01001110 the right byte will be 01110010…
Use a lookup table aligned on a 256 byte boundary. Then you have a fixed high byte address and the byte you're reflecting becomes the offset into the table.
Of course you still need to build this table with ugly rotate opcodes first!Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....
... the screen was fixed to 256 byte boundaries and the rest is ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... . the end of one 32 byte (or bigger/smaller) line goes ... will be faster as no 256 byte boundries to worry about.
